Evidence for a Snowball Earth Imagine a world so barren and so cold that life as we know it today could not exist. Some researchers have been able to track Earth’s glacial deposits to predict just that; a time in which our planet was coated with snow and ice extending from the poles all the way to the equator (Kaufman). We call this period of Earth a “snowball earth.” Scientist Paul Hoffman and his colleagues used Joseph Kirschvink’s suggestion that earth was once completely frozen during the
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9Chapter 14Pg 457-469 | Pg 275Q’s 1-4Pg 282 & 290Q’s 8-17Pg 467 & 469Q’s 3-8 | Mt Henry and surrounding area field survey. | | | EXEAT weekend Thurs to Mon | | | | | 5 | Cycling of mattermatter cycles through abiotic and biotic components of the ecosystem * carbon cycle * nitrogen cycleProductivity in communities * comparison of biomass in different trophic levels * comparisons of productivity between communities | Chapter 14Pg 478 - 483 | Compare and contrast productivity
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past few decades, the earth has been increasingly warmer; weather changes have become more unpredictable. This phenomenon known as global warming, according to Maslin (2000), global warming is due to the massive increase in greenhouse gases such as carbon dioxide, which we are emitting into the atmosphere. Global warming can be natural or human induced, natural global warming occurs due to factors such as volcanic eruption, the relationship between the earth’s rotation axis position and revolution
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Sustainable Urban Living - BedZED, London The beddington Zero Energy Development, near croydon in greater London is the largest carbon-neutral eco community in the UK. It was built on reclaimed land and focuses on social and environmental sustainability, while promoting energy conservation. There are around 100 houses and apartments, as well as offices/workplaces there since the opening in 2002, meaning that i's been successfully operating for 14 years. BedZED's homes use 81% less energy for
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Earth climate has changed many time before. There was a time period when the whole planet was covered with ice. Now the scenario has been totally changed. If we flashback just last 650,000 years back, there was an increased level of environmental carbon-di-oxide (CO2) and temperature and simultaneously decreased the cyclical pattern. Scientists have been studies and analyze enormous experimental trials to find out the better way and to understand the climate change in this planet. Some of
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born haber cycle= a thermochemical cycle that includes all the enthalpy changes involved in the formation of an ionic compound. e.g the born haber cycle for sodium chloride if we know any five we can calculate the other: starting from the elements in their standard states. Na s -> Na g +108kjmol-1 ½ CL2-> Cl g +122kjmol-1 Na g -> Na+ + e- +496kjmol-1 Cl g + e+ -> Cl- g -349kjmol-1 Na s + ½ Cl2 -> NaCl s -411kjmol-1 When drawing the born haber cycles: * Make
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Power Shortage in Mindanao: A Call for New Power Plants It is swirling in the news that Mindanao suffers from power shortage. According to the news aired on March 27, 2012 over GMA News' Saksi, The Energy Department had said that projected peak demand in Mindanao is 1,300 MW although the available capacity is only at 1,100 MW, excluding the required reserve margin to maintain the "integrity" of the Mindanao Grid which is pegged at 250 MW. The same television report said the power shortage was reportedly
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................................................................................................... 7 1.2.1 Particulate Matter ........................................................................................................... 8 1.2.2 Carbon Monoxide ........................................................................................................... 9 1.2.3 Unburned HC‘s .........................................................................................................
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Environment pollution is the mixing of harmful pollutants into the environment causing disturbance to the natural processes and cycles. Various types of environmental pollution are categorized as the water pollution, air pollution, land pollution and noise pollution. Production of solid and liquid wastes on large scale from the industries, emissions of hazardous gases, deforestation, global warming, and many more problems originated by the human beings are the main reasons of increasing the environmental
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variety of organisms and their environment * diversity of interactions: interdependence of species = stability * diversity of habitats: structural diversity increases biodiversity Loss of biodiversity -affects food -medicine -economics -carbon cycle ______________________________________________________________________________ Taxonomy (to arrange) - the science of identifying, classifying, and naming organisms - classification based on similarities in structure and function - classifying
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